Link Coupled Tuner question...

[W2DU]

Just curious, Don, is your GR impedance bridge a 916A or 1606A? I have several impedance bridges, including a 1606A and a 1606B and several HP types. I've loaned the 1606B to Rick, but I use the 1606A when I want the best accuracy available. It's accuracy beats the HP-4815, especially in the very low impedance areas, less than 5 ohms.

Walt

[k4kyv]

It's a 916AL.  Its maximum frequency range is 3 mHz as I recall.  It is designed for low frequencies and the broadcast band, but 160m is well within its range.  All I have ever used it for is to measure the base impedance of my vertical, and last time was several years ago.  The process is kind of cumbersome because I have to lug the bridge, a receiver and a signal source down to the tower and supply a source of a.c. power to the receiver and signal generator.

[W2DU]

Thanks Don. The GR-916AL was used to measure antenna impedance on nearly all standard AM BC stations all through the 1930's and 40's and beyond. GR improved on the 916A with the 1606A in 1955.

Walt